DE3300023A1 - WORKING MATERIAL PAIR FOR USE IN SORPTION REFRIGERATORS, CONTAINING TRIFLUORETHANOL - Google Patents

WORKING MATERIAL PAIR FOR USE IN SORPTION REFRIGERATORS, CONTAINING TRIFLUORETHANOL

Info

Publication number
DE3300023A1
DE3300023A1 DE19833300023 DE3300023A DE3300023A1 DE 3300023 A1 DE3300023 A1 DE 3300023A1 DE 19833300023 DE19833300023 DE 19833300023 DE 3300023 A DE3300023 A DE 3300023A DE 3300023 A1 DE3300023 A1 DE 3300023A1
Authority
DE
Germany
Prior art keywords
alkyl
general formula
hydrogen
derivatives
refrigerant
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19833300023
Other languages
German (de)
Other versions
DE3300023C2 (en
Inventor
Dieter Dipl.-Chem. Dipl.-Ing. Dr. 2080 Pinneberg Veltwisch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche BP AG
Original Assignee
Deutsche BP AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche BP AG filed Critical Deutsche BP AG
Priority to DE19833300023 priority Critical patent/DE3300023C2/en
Priority to JP50037684A priority patent/JPS60500292A/en
Priority to PCT/GB1983/000347 priority patent/WO1984002715A1/en
Priority to EP19840900291 priority patent/EP0131590A1/en
Publication of DE3300023A1 publication Critical patent/DE3300023A1/en
Priority to DK420884A priority patent/DK420884D0/en
Application granted granted Critical
Publication of DE3300023C2 publication Critical patent/DE3300023C2/en
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/02—Materials undergoing a change of physical state when used
    • C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
    • C09K5/047—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for absorption-type refrigeration systems

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

Working fluid for an absorption refrigerating machine comprises trifluoroethanol as refrigerant and defined nitrogen-containing heterocyclic compounds as absorbents.

Description

Beschreibung description

Die Erfindung betrifft Arbeitsstoffpaare zur Verwendung in Sorptionskältemaschinen, enthaltend 2,2, 2-Trifluorethanol als Kältemittel.The invention relates to pairs of working substances for use in sorption refrigeration machines, containing 2,2,2-trifluoroethanol as a refrigerant.

Bei Sorptionskühlmaschinen bzw. -wärmepumpen wird in einem geschlossenen System ein Arbeitsstoffpaar, bestehend aus einem Kältemittel und einem Absorptionsmittel, verwendet, wobei das Absorptionsmittel häufig aus einer hochsiedenden Flüssigkeit besteht. Die Kühlung wird durch Verdampfung des Kältemittels in einer Verdampfereinrichtung oder dergleichen erreicht, wobei an der Verdampfereinrichtung ein Strömungsmittel abgekühlt wird, das an das Kältemittel Verdampfungswärme liefert. Das verdampfte Kältemittel wird in einem Absorberteil in dem an Kältemittel armen Absorptionsmittel absorbiert. Die bei der Absorption gebildete Wärme wird an ein externes Kühlmittel abgegeben. Die an Kältemittel reiche Lösung wird zu einem Austreiberteil (Kocherteil) geführt, wo man die Lösung zum Austreiben des Kältemittels erwärmt.Sorption cooling machines or heat pumps are used in a closed System a pair of working materials, consisting of a refrigerant and an absorbent, used, the absorbent often consisting of a high-boiling liquid consists. The cooling is achieved by evaporation of the refrigerant in an evaporator device or the like, with a fluid at the evaporator device is cooled, which supplies heat of vaporization to the refrigerant. That evaporated Refrigerant is in an absorber part in the absorbent poor in refrigerant absorbed. The heat generated during absorption is transferred to an external coolant submitted. The refrigerant-rich solution becomes an expeller part (cooker part) led, where the solution is heated to drive off the refrigerant.

Die erhaltene, an Kältemittel arme Lösung, die noch wenig Kältemittel enthält, wird zum Absorberteil zurückgeführt.The solution obtained, low in refrigerant, which is still low in refrigerant contains, is returned to the absorber part.

Das ausgetriebene dampfförmige Kältemittel wird durch Wärmeaustausch mit einem externen Kühlmittel verflüssigt und dann erneut dem Verdampferteil zugeführt.The expelled vaporous refrigerant is through heat exchange liquefied with an external coolant and then fed back to the evaporator section.

Arbeitsstoffpaare für die Verwendung in Sorptionskältemaschinen sollen insbesondere die folgenden Anforderungen erfüllen: a) Eine möglichst große Differenz der Siedetemperaturen zwischen dem Kältemittel und der Mischung aus Kälte-und Sorptionsmittel, b) ein flüssiger Aggregatzustand der Mischung aus Kälte-und Sorptionsmittel im Arbeitsbereich, c) thermische Stabilität der Mischung aus Kälte- und Sorptionsmittel, d} ein geringer Rektifitationsaufwand für das Gemisch aus Kälte- und Sorptionsmittel, e) eine geringe Viskosität des Gemisches aus Kälte- und Sorptionsmittel im Arbeitsbereich sowie f) eine hohe Austreibertemperatur der Mischung aus Kälte-und Sorptionsmittel, wenn ein hohes Nutztemperaturniveau gewünscht wird.Working substance pairs for use in sorption chillers are intended in particular meet the following requirements: a) One if possible large difference in boiling temperatures between the refrigerant and the mixture of refrigerants and sorbents, b) a liquid state of aggregation of the mixture Refrigerants and sorbents in the work area, c) thermal stability of the mixture from refrigerants and sorbents, d} a low rectification effort for the mixture of refrigerants and sorbents, e) a low viscosity of the mixture of refrigerants and sorbents in the work area and f) a high expulsion temperature of the Mixture of refrigerant and sorbent, if a high useful temperature level is required will.

Aufgabe der Erfindung ist die Zurverfügungstellung von Arbeitsstoffpaaren der eingangs genannten Art, die die oben genannten Anforderungen erfüllen.The object of the invention is to provide pairs of working materials of the type mentioned above, which meet the above requirements.

Die Arbeitsstoffpaare der Erfindung enthalten als Sorptionsmittel Verbindungen gemäß den allgemeinen Formeln 1 bis VII aus den Patentansprüchen mit-den übrigen, in den Ansprüchen angegebenen Merkmalen.The working substance pairs of the invention contain as sorbents Compounds according to the general formulas 1 to VII from the claims with the other features specified in the claims.

Bevorzugt sind Arbeitsstoffpaare, die -das Sorptionsmittel in einer Menge von 50 bis 90, insbesondere von 50 bis 85 Gew. Oo, bezogen auf das Gesamtgewicht des Arbeitsstoffpaares, enthalten.Preference is given to pairs of working substances which - the sorbent in one Amount from 50 to 90, in particular from 50 to 85 wt. Oo, based on the total weight of the working substance pair.

Besonders bevorzugte Verbindungen der allgemeinen Formeln I bis VII sind die folgenden: N-Methyl-2-pyrrolidon, N-Methyl-2-piperidon, N-Methyl- g -caprolactam, N-Methyl-2-pyridon, N-Methylimidazol, N-n-Butylimidazol, 1,2-Dimethylimidazol, 1,3-Dimethyl-2-imidazolidon, 3-Methyl-pyrazol, Pyridazin, 3-Methylpyridazin, 6-Methyl-chinolin und/oder 5-Methyl-2-pyrrolidon.Particularly preferred compounds of the general formulas I to VII are the following: N-methyl-2-pyrrolidone, N-methyl-2-piperidone, N-methyl- g -caprolactam, N-methyl-2-pyridone, N-methylimidazole, N-n-butylimidazole, 1,2-dimethylimidazole, 1,3-dimethyl-2-imidazolidone, 3-methyl-pyrazole, pyridazine, 3-methylpyridazine, 6-methyl-quinoline and / or 5-methyl-2-pyrrolidone.

Claims (2)

Arbeitsstoffpaar zur Verwendung in Sorptionskältemaschinen, enthaltend Trifluorethanol.A pair of working materials for use in sorption refrigeration machines, containing Trifluoroethanol. Patentansprüc-he 1. Arbeitsstoffpaar zur Verwendung in Sorptionskältemaschinen, enthaltend 2,2,2 - Trifluorethanol als Kältemittel, dadurch gekennzeichnet, daß es als Sorptionsmittel a) Imidazolidonderivate der allgemeinen Formel I in der R1 und R2 Wasserstoff und/oder C1 - C4 - Alkyl und R³C1 - C4 bedeuten, b) Imidazolderivate der allgemeinen Formel II in der R4 und R5 Wasserstoff und/oder C1 - C4 - Alkyl bedeuten, c) Pyrazolderivate der allgemeinen Formel III in der R6 Wasserstoff und/oder C1 - C4 - Alkyl und R7 C1 - C4 -Alkyl bedeuten, d) Pyridazinderivate der allgemeinen Formel IV in der R8 Wasserstoff oder C1 - C4 - Alkyl bedeutet, e) Pyridonderivate der allgemeinen Formel V in der R9 und R10 Wasserstoff und/oder C1 - C4 - Alkyl bedeuten, f) Chinolinderivate der allgemeinen Formel VI in der R11 und R12 Wasserstoff oder C1 - C4 - Alkyl bedeute, wobei mindestens eine der Gruppen R11 und R12 C1 - C4 - Alkyl ist, und/oder g) Lactamderivate der allgemeinen Formel VII in der R13 und R14 Wasserstoff und/oder C1 - C4 - Alkyl bedeuten und m 1, 2, 3 oder 4 ist.Patent claims he 1st pair of working substances for use in sorption chillers, containing 2,2,2 - trifluoroethanol as a refrigerant, characterized in that it is a) imidazolidone derivatives of the general formula I as sorbent in which R1 and R2 are hydrogen and / or C1 - C4 - alkyl and R³C1 - C4, b) imidazole derivatives of the general formula II in which R4 and R5 are hydrogen and / or C1-C4-alkyl, c) pyrazole derivatives of the general formula III in which R6 is hydrogen and / or C1-C4-alkyl and R7 is C1-C4-alkyl, d) pyridazine derivatives of the general formula IV in which R8 denotes hydrogen or C1-C4-alkyl, e) pyridone derivatives of the general formula V in which R9 and R10 are hydrogen and / or C1-C4-alkyl, f) quinoline derivatives of the general formula VI in which R11 and R12 mean hydrogen or C1-C4-alkyl, where at least one of the groups R11 and R12 is C1-C4-alkyl, and / or g) lactam derivatives of the general formula VII in which R13 and R14 are hydrogen and / or C1 - C4 - alkyl and m is 1, 2, 3 or 4. sowie übliche Additive wie Korrosionsinhibitoren, Stabilisatoren und/oder Tenside enthält.and customary additives such as corrosion inhibitors, stabilizers and / or Contains surfactants. 2. Arbeitsstoffpaar nach Anspruch 1, dadurch gekennzeichnet, daß das reine Sorptionsmittel bzw. das Gemisch der reinen Sorptionsmittel unter Normaldruck einen Siedepunkt von mindestens 1800C aufweist.2. pair of working materials according to claim 1, characterized in that the pure sorbents or the mixture of pure sorbents under normal pressure has a boiling point of at least 1800C. 3; Arbeitsstoffpaar nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Schmelzpunkt des Gemisches aus Kältemittel und Sorptionsmittel bei einem Gehalt an Kältemittel von mindestens 10 Gew.-%, insbesondere von mindestens 15 Gew.-%, bezogen auf das Gesamtgewicht des Gemisches, höchstens 200C beträgt.3; Working substance pair according to claim 1 or 2, characterized in that that the melting point of the mixture of refrigerant and sorbent at one Refrigerant content of at least 10% by weight, in particular at least 15% by weight, based on the total weight of the mixture, does not exceed 200C.
DE19833300023 1983-01-03 1983-01-03 Working substance pair for use in sorption chillers, containing trifluoroethanol Expired DE3300023C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE19833300023 DE3300023C2 (en) 1983-01-03 1983-01-03 Working substance pair for use in sorption chillers, containing trifluoroethanol
JP50037684A JPS60500292A (en) 1983-01-03 1983-12-22 Fluids used in absorption refrigeration machines and heat pumps
PCT/GB1983/000347 WO1984002715A1 (en) 1983-01-03 1983-12-22 Fluids for use in sorption refrigerators and heat pumps
EP19840900291 EP0131590A1 (en) 1983-01-03 1983-12-22 Fluids for use in sorption refrigerators and heat pumps
DK420884A DK420884D0 (en) 1983-01-03 1984-09-03 LIQUIDS FOR USE IN SORPTION COOLERS AND HEAT PUMPS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833300023 DE3300023C2 (en) 1983-01-03 1983-01-03 Working substance pair for use in sorption chillers, containing trifluoroethanol

Publications (2)

Publication Number Publication Date
DE3300023A1 true DE3300023A1 (en) 1984-07-05
DE3300023C2 DE3300023C2 (en) 1985-09-19

Family

ID=6187661

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833300023 Expired DE3300023C2 (en) 1983-01-03 1983-01-03 Working substance pair for use in sorption chillers, containing trifluoroethanol

Country Status (5)

Country Link
EP (1) EP0131590A1 (en)
JP (1) JPS60500292A (en)
DE (1) DE3300023C2 (en)
DK (1) DK420884D0 (en)
WO (1) WO1984002715A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3418705A1 (en) * 1984-05-19 1985-12-12 GEA Luftkühlergesellschaft Happel GmbH & Co, 4630 Bochum Systems of materials for sorption processes
WO1990005174A1 (en) * 1988-11-10 1990-05-17 The Lubrizol Corporation Liquid refrigerant compositions
US5023007A (en) * 1988-11-10 1991-06-11 The Lubrizol Corporation Liquid refrigerant compositions

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030127A1 (en) * 1979-11-30 1981-06-10 Daikin Kogyo Co., Ltd. Absorption refrigerant compositions for use in absorption refrigeration systems
GB2080821A (en) * 1980-02-12 1982-02-10 Tokyo Sanyo Electric Co Composition and system for absorption refrigerator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2149948A (en) * 1938-02-16 1939-03-07 Zellhoefer Solvent
DE1044843B (en) * 1955-09-30 1958-11-27 Siemens Elektrogeraete Gmbh Working medium system for a continuous absorption chiller
US3722211A (en) * 1970-09-28 1973-03-27 Halocarbon Prod Corp Prime mover system utilizing trifluoroethanol as working fluid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0030127A1 (en) * 1979-11-30 1981-06-10 Daikin Kogyo Co., Ltd. Absorption refrigerant compositions for use in absorption refrigeration systems
GB2080821A (en) * 1980-02-12 1982-02-10 Tokyo Sanyo Electric Co Composition and system for absorption refrigerator

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Klima-Kälte-Ingenieur extra, 1981, 14, S. 37-40 *
Ullmann: 4. Aufl., Bd. 13, 1977, S. 173, 174 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3418705A1 (en) * 1984-05-19 1985-12-12 GEA Luftkühlergesellschaft Happel GmbH & Co, 4630 Bochum Systems of materials for sorption processes
WO1990005174A1 (en) * 1988-11-10 1990-05-17 The Lubrizol Corporation Liquid refrigerant compositions
US5023007A (en) * 1988-11-10 1991-06-11 The Lubrizol Corporation Liquid refrigerant compositions

Also Published As

Publication number Publication date
JPS60500292A (en) 1985-03-07
WO1984002715A1 (en) 1984-07-19
DK420884A (en) 1984-09-03
DK420884D0 (en) 1984-09-03
EP0131590A1 (en) 1985-01-23
DE3300023C2 (en) 1985-09-19

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